Strong coupling of a superconducting flux qubit to single bismuth donors
In this work, we couple spins to a highly non-linear circuit with huge current quantum fluctuations18,19,20. This circuit…
Effective descriptions of bosonic systems can be considered complete
Bosonic quantum information theory Quantum information theory with bosonic systems typically involves modeling unbounded operators over infinite-dimensional Hilbert…
On-chip quantum interference of indistinguishable single photons from integrated independent molecules
Pelucchi, E. et al. The potential and global outlook of integrated photonics for quantum technologies. Nat. Rev. Phys.…
Quantum fusion of independent networks based on multi-user entanglement swapping
Xu, F., Ma, X., Zhang, Q., Lo, H. K. & Pan, J. W. Secure quantum key distribution with…
The generalized quantum Stein’s lemma and the second law of quantum resource theories
Nielsen, M. A. & Chuang, I. L. Quantum Computation and Quantum Information: 10th Anniversary Edition (Cambridge Univ. Press,…
Spin environment of a superconducting qubit in high magnetic fields
In Fig. 1 we present the field resilient gralmonium qubit, fabricated from a single layer of grAl (cf. Fig. 1a),…
Individual solid-state nuclear spin qubits with coherence exceeding seconds
Steger, M. et al. Quantum information storage for over 180 s using donor spins in a 28Si semiconductor vacuum.…
Entanglement theory with limited computational resources
We now aim to determine the fundamental limits and possibilities of computationally efficient entanglement manipulation. Here the goal…
Observation of constructive interference at the edge of quantum ergodicity
Authors and Affiliations Google Research, Mountain View, CA, USA Dmitry A. Abanin, Rajeev Acharya, Laleh Aghababaie-Beni, Georg Aigeldinger, Ross Alcaraz, Igor Aleiner, Trond I.…
Classical theories of gravity produce entanglement
To illustrate this further, we now demonstrate how equation (4) leads to entanglement in a version of Feynman’s…
Optimization by decoded quantum interferometry
NP-hardness results indicate that finding exact optima and even sufficiently good approximate optima for worst-case instances of many…
‘Squeezed light’ might be the secret to building the quantum internet
Imagine a future where the internet isn’t just fast, it’s fundamentally different. Where information doesn’t travel through cables…